Shipping case



Aug. 3 1926.`

w.l w. DUNN, JR., ET AL sHIPPING CASE Filed May 19, 1925 2 Sheets-Sheet l m www Aug. 3 1926.

1,594,358 w. w. DUNN, JR., ET Al.

SHIPPING CASE Filed May 19, 1925 2 Sheets-Sheet 2 f 44.1,- l la) v Patented Aug.' 3, 1926.

UNITED STAT-Es- '1.594,358 APATENT OFFICE.

wINsLoW w. DUNN, Jn., AND CLAIRE L wn-rxnnr, or s'r. PAUL, MYINNn'soTA; SAID DUNN AssIGNon To SAID WEIKERT.

SHIPPING CASE.

Application med nay 191925. serial No. 31,435.

, This invention relates. to shipping cases, and especially to cases adapted for utilization in the shipment of containers filled with perishable commodities.`

The invention has great utility in connection with the shipmentorl transportation lof containers for ice cream or milk, where it is not only necessary to insulate 4the .container from the relatively warm outside atmosphere, but also to protect the container from -inj ury during transportation.

The object of the invention therefore is the provision of shipping cases of the character above referred to, which will not only tend to preserve the temperature and condition of the commodity within the container, but will also protect the latter from injury. A further object of the invention is the provision of'a case of the-class described which is so constructed as tol endure under the relatively hard usages to which it will be subjected during transportation, and

which is equipped with instrumentalities which not only facilitate handling, but which insure that the case will be. so handled, during transportation, as to minimize the danger Vof undue wear upon the case, or damage to the contents thereof.

Other objects of the invention will be made apparent in the following specifications, taken in connection with the drawings forming a part thereof.

In said drawings: Fig. 1 is a longitudinal vertical section taken centrally through a case constructed in accordance with our invention.

Fig. 2 .is a reduced perspective vie-w`showing the methodv of carrying a case, during transportation. Fig. 3 is a perspective view of a case ready for shipment.

Fig. 4 is a perspective view of the outer section of the case.

Fi 5 is a fragmentary perspective view, showing the inner section of the case api plied to a container for ice cream, milk, or'

other perishable product.

Fig. 6- is a transverse section taken through Fig. 1, and,

Fig. 7 is an enlarged fragmentary section 'of the corner of the outer section of the case shown in Fig. 1.

New referring specifically to the drawings, inA which similar reference characters indicate. like parts throughout thel several views, the case comprises an inner tubular A member A, closed atthe bottom, and an outer tubular member B closed at thev top,

and adapted to telescope o'ver the member A with a close fit. The member A is formed to receive and closely embrace a container C, adapted to receive ice cream, milk, or any other commodity. It is to beunderstood that the case may be made in several types a's to size and configuration, whereby to adapt it for use in receiving standard containers of as many varying types.

Both members A and B, are provided with enclosing walls of exactly the same material, but of slightly difrent dimensions whereby to adapt the member B to fit overthe member A. Both members are preferably provided with side walls 1, comlprising an inner section 2 of insulating material of a thickness of approximately 1/2 inch, yand of suiiicient inherent rigidity tocause the case to retain an upright position when not'in use. An insulating materialj suchas flax-li-num is preferred, al-v v though balsam wool, or other materials possessed of the necessaryv insulating'characteristics, may be used. The end walls,that

is the bottom of the section A, and the l top ofthe section B, are also provided with the insulating section 2.

In the preparation of the case, the side walls 1 of each section are prepared and cut to the desired size and rolled to tubular form, the two edges being connected to retain the tubular formation. The wall 1 is then entirely covered, on the outside, by a Y heavy water-proof and mildew-proof canvasv 3, and -on the inside by a salt resistant canvas 3', and the two sections 3 and -3 are secured to2/the material 2 by a plurality of rows of stitching 4, 4, the canvas layers being so applied` as to leave a perlpherally extending canvas rim 5 at the top of the section A and at the bottom of the section B, and the rim 5 is also traversedby a. row of stitching 6, to retain the insulation 2.

The bottom 7 of thesection A is formed Y exactly as is the 'top of the section B, and hence a description of an end of one section is suicient. As clearly shown in Fig. 1, and more speciiically in Fig. 7, the top 8 of the outer section B is provided with two dlskshaped layers of the selected insulating madownwardly over the outside of the. section B, and an outer covering 10, of the same material as the canvas 3 heretofore referred to, a plurality of rows of stitching extending through the cover, disks and lining, and permanently securing them together. To the outer periphery of the covering 10 is stitched a slip 10, which extends downwardly along the side-walls l of the section B, and which is secured to said wall by one of the rows of stitching 4, alcng the lower edge of the slip. To obtain additional insulation and rigidity at the top, the lining 3 is also extended over the top periphery of the section 2, and downwardly along the outer wall 1, terminating flush with the lower edge of the slip 10', so that the rows of stitching 4 extend through the slip 10', the lining 9, the lining 3, the covering 3, the insulation 2, and again through the lining 3. `Suitable stitching may beprovided as desired, to provide for durability andfstrength, or for increased insulation. As hereinbefore stated, the bottom of the inner section A is formed exactly as is the top of the section B, as just described, it being noted that the insulating vsections 12 and 12 are each of the same thickness as the section 2, and thata slip 13 1s stltched to the end cover 14, of the sectionv cured to the outer peripheries of the disks 8 and 12', respectively, and that said slips extend over the joints between said disks and are secured in such position, whereby to prevent access of air through said joints.

The rim 5 at the top of the section A is separated at diametrically opposed points, to receive the ends of strap members 15,15', one of which carries a buckle or fastening element 16, adapted to receive the free'end of the other strap, and the straps being secured by lstitching to the rim, as will be understood without further explanation. Also, the bottom of the member A carries a strap 17, secured by a row of stitches 18, to the cover of the lower end ofthe section A, the strap 17 having free ends 17, adapted for detachable connection to co-operating fas- Laagste laterally of the member B, and is positioned at a point above the axial center thereof.

In order to guard against any circulation of air between the sections A and B, when in telescoped condition, l provide an apron 22 which is secured to the outside of the section A by one of the rows 4 of stitching. The apron is secured in the positionshown in Figs. 1 and 5, creating a slight bulge at the point of juncture, and its lower circular portion is of greater diameter than the outer diameter of the section A. Therefore, as the section B is forced downwardly over the section A the material of the apron is squeezed between the two sections, forming practically an air-tight seal which prevents the passage of any air between the lower edge of the section B, and upwardly along the sides 'of the section A. Such compression vcauses a slight protuberance in the section B, greatly exaggerated in Fig. 1 of the drawing, but not noticeable in the actual product.

In operation the container C is seated within the member A, as indicated in Fig. 5, it being noted that the upper end of the container projects very slightly above the top edge of the member. The lids of all such containers are usually provided with a handle 23, as indicated, and the straps 15, 15 are extended beneath said handle and tightly secured each to each, thereby not only preventing dislodgment of the handle, but also securing themember A to the container C. Furthermore, as the straps 15 and 15 are tightened, they contact the top of the can closure D, pressing it tightly against its seat and preventing it from becoming released during transportation.

The member B is then telescopically fitted 4over the member A, and the strap ends 17 engaged with the co-operating elements 19, to draw the members longitudinally of one another until they are in very close contact each to each at the ends, and the case is transported in this condition.

It will be noted that the insulation at the ends of the assembled case is of the same thickness as that' of the sides. The double insulation at the ends of the sections A and B is of great importance, especially in the shipment of ice cream or milk. The containers are always stood upon end and, in a great many instances, the upper end is exbeing properly reduced.

posed to the rays'of .the sun, the double insulation under suchcircumstances serving to effectively preserve the temperature of .the commodity contained in the ends of the cans.- In thev ice cream trade the retailer is satis- 4fied if, 'during shipment, the temperature is The bottom of the inner member A is also provided with the double insulation, since it is usually seated upon the relatively warm floor of a car during shipment, or is allowed to stand upon the sun-heated platforms of stations after being removed from the transporting vehicle. The double insulation therefore leffectively protects the commodity 'inthe bottom of the container from the 4 deleterious effects of absorbed heat, and the consequent softening of the cream in said bottom.

In removing the cases from the car, wagon i or other; transporting vehicle, the operator finds it most convenient tograsp the handle 20. The handle 20 is so disposed relatively l of the length of the case, that, when the operators arm is extended naturally to carry` the case, the bottom of the latter will notL `reach the ground. If the operating handle were positionedat the top of themember B, practically all operators would drag the case over the licor of the car, or over the ground, in delivering it to its destination, resultin in unnecessary wear on the bottom thereo By practically forcing the operator to grasp a handle located at the side of the case, the bottom of the case frees the Hoor or ground, as illustrated in lFig. 2,- and prevents 11nnecessary wear.

From theforegoing it will be obvious that the invention covers. a shipping case which affords a vdouble insulation4 throughout, which insulation is increased at each end, thereby preserving `the temperature .of the goods carried bythe container C. With such cases properly constructed and' insulated with the materials referred to, or with others as eicacious, it is practically impos sible for any outside air to reach the interior of the case, and the temperature of ice cream' in the container will maintain, for 24 or 36 hours. l

The inner canvas which is applied to the members. A and B is a mildew-proof material known on the market as Shuredry, Furthermore the outer canvasis formed of an article known as Preserve which is ab solutely waterproof, the'result being that, if the cases are exposedvto the elements, no water will soak through and rust the containers C, and the case will not become mildewed. Also, because of the Preserve treated can'- vas and the Shuredry lining, the case is resistant't-o the -erosive action of salt which is generally used in packing ice cream for shipment.

y -TheI article referred to is essentially a one-man case, since it is of course easy for one operator to place the top section B over the bottom section A. i In removing the top section B the straps.l7"-are released from 80 the fasteners 19, and laid flat on-the floor which supports the case. ,As shown in Fig.

5, the operator then straddles the canand places a foot lon each of the Hat straps 17 and pulls the outer section B from off the ,inner section A, as will be understood. .c Modifications of the structurel herein de^ y scribed willbe suggested to those skilled in -the art, but. the invention covers all modifications fairly falling within the appended claims. v

' What wekclaim is -1. A shipping case comprising telescoping members, and an end closure'for each member, each end closure being of an insulating efficiency equal to double the insulating efficiency of the side walls of the members. I

2. A shipping case comprising two telescoping members each having side lwalls containing a thickness of insulating material, and with an end wall having an insulating eiliciency double thatyof the side walls. Y

- 3.' AA shipping case comprising twotei'e- 'scoping members of insulating material,the

outer member being entirely covered with water-proof and mildew-proof material, and the inner member being lined with salt re-l sistant material, each member having an end closure possessed of an insulatin eiciency ouble that of 'the body portion o the me1n' er.' l

4. A shipping'case comprising two tubular members formed of insulating material,

one adapted to telescopeover the other, each Amember being made up of-.a- -cylindricallyl formed' side wall, and anend closure con-- sisting of two superposed insulating disks of different y"diameters, whereby to provide a socket shaped to receive the peripheral edge of said side wall.

5. A shipping case comprising two tubular members'forme'd of insulating material, one adapted to telescope over the other, each` member 'being made up of a cylindrically formed sidel wall, and anend closure consisting of tivo superposed insulating disks of dili'erent diameters, whereby to provide a socket shaped to receivethe'peripheraledge .1.

of said side Wall, and an insulating strip applied over thel edge. of said disks and sealing the joints therebetween substantially as described.

6. A shipping case comprising two inembers one of which is adapted to telescopically fit over the other, each member being provided With insulation in its side Walls, and 'With double insulation in its end walls, the outer member being provided with a cover of Water-proof material ands"` tures.

the inner member with a lining of salt-reslstant material, and an apron secured to the outer side of the inner member, and sealing the space between said members substantial-- ly as described.

7. A shipping ease comprising two members one of which is adapted to telescopically lit over the other, each member being provided Witll a. closed end wall, and with insulating meterial incorporated in the side wall and end Wall, the insulating efliciency of said end Wall being double the insulating eliiciency of the said side wall.

In testimony whereof we affix our signa- 25 WINSLOW W. DUNN, JR. CLAIRE I. VVEIKERT. 

